[beardface]

Type 1 diabetic here. My body doesn't produce insulin, so if my glucose level goes up after eating or drinking something, that increase in glucose is a (very) approximate measure of insulin response in someone without type 1 diabetes. Insulin is released/produced/injected in response to glucose level increase (and other signals in someone who doesn't have type 1 diabetes).

In my experience, black coffee is absolutely fine outside of an eating window. I fast for at least 18 hours a day, only drinking black coffee and water when fasting. There was no measurable difference in glucose on occasions when I drank black coffee, vs occasions without (all other things as equal as possible).

[agacera]

Thanks for sharing this.

Did you notice any improvements with your condition (type 1 diabetes) once you started to do intermittent fasting?

[beardface]

It's difficult to tell if IF alone had a change because I also switched to a very low carbohydrate diet at pretty-much the same time. The two combined had a massively positive effect on my diabetes.

My glucose level is much more stable, and A1C is lower. I also use significantly less insulin than a lot of people with type 1 diabetes.

My reason for doing both was to reduce insulin levels as much as possible.

[yawnxyz]

Didn't someone post that they were wearing a glucose monitor and it shoots up every time they drink black coffee?

[manmal]

It does for some people, IIRC. Human metabolism is highly individual.